Dovetail jointed insulation cylinder
The dovetail groove splicing design of the insulation cylinder solves the problem of insufficient applicability of the insulation cylinder board, realizes flexible adjustment of the insulation cylinder diameter and splicing stability, reduces costs and improves assembly efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG NIPPON TECHNO-CARBON CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, the applicability of thermal insulation cylinders is not strong, and they cannot adapt to the needs of different diameters, which leads to the need to prepare multiple sets of parts, and the cost may not necessarily be reduced.
The insulation cylinder adopts a dovetail groove splicing design. Through the cooperation of dovetail sliders and dovetail grooves, the adjustable angle connection of the split splicing panels can be achieved. Combined with locking posts and locking slides, the stability and adjustability of the splicing are ensured.
It enables flexible adjustment of the insulation cylinder diameter, enhances the applicability of components, reduces preparation costs for different operating conditions, and improves splicing stability and assembly efficiency.
Smart Images
Figure CN224591083U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of graphite thermal field technology, specifically relating to a heat-insulating cylinder with dovetail groove splicing. Background Technology
[0002] Graphite thermal fields are an important component in the manufacture of single-crystal silicon. Their function is to convert electrical energy into heat energy to melt the silicon material and maintain the single crystal growth at a specific temperature. Graphite thermal fields are typically made of graphite, which possesses high thermal conductivity, high heat resistance, and high chemical stability, making them suitable for use in high-temperature, high-vacuum environments.
[0003] A modular insulation ring for a single-crystal furnace, disclosed in patent CN223292709U, relates to the field of single-crystal furnace thermal field technology. It includes an outer insulation component, an inner insulation component, and a connecting assembly. The outer insulation component comprises multiple outer insulation cylinder plates, arranged circumferentially along a virtual circle. Adjacent outer insulation cylinder plates are joined together to form the outer insulation component, and the multiple outer insulation components are distributed circumferentially along the virtual circle. The inner insulation component comprises multiple inner insulation cylinder plates, arranged circumferentially along the virtual circle. Adjacent inner insulation cylinder plates are joined together to form the inner insulation component, and the multiple inner insulation components are distributed circumferentially along the virtual circle to form an insulation zone, with the virtual circle located within the insulation zone. The inner and outer insulation components are connected by the connecting assembly. This application has the advantages of reducing costs and facilitating component replacement.
[0004] In the above solution, adjacent insulation cylinders are connected to form an insulation cylinder by plug-in blocks and plug-in slots. Although this facilitates the replacement of parts, the applicability of the insulation cylinders is not strong. They can only be spliced into insulation cylinders of a fixed diameter. Multiple sets of parts need to be prepared for different operating conditions, and the cost may not necessarily be reduced. Summary of the Invention
[0005] The purpose of this utility model is to address the above-mentioned problems by providing a dovetail groove splicing insulation cylinder that can solve the aforementioned technical issues.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: The dovetail splicing insulation cylinder includes split splicing plates. Each split splicing plate has a dovetail connection structure that can cooperate with each other at both ends of its long side. Several adjacent split splicing plates are joined together at different angles by the dovetail connection structure to form a complete insulation cylinder body. Locking posts and locking grooves are provided at both ends of the short side of each split splicing plate to make the insulation cylinder bodies axially connected.
[0007] In the dovetail groove splicing insulation cylinder, the dovetail connection structure includes a dovetail slider at one end and a dovetail groove at the other end. The dovetail slider is inserted into the dovetail groove on the adjacent split splicing plate from the long side direction.
[0008] In the dovetail groove splicing insulation cylinder, the dovetail connection structure includes dovetail sliders disposed at both ends of one of the split splicing plates and dovetail grooves at both ends of the adjacent split splicing plates. The dovetail sliders are inserted into the dovetail grooves on the adjacent split splicing plates from the long side direction.
[0009] In the dovetail groove spliced insulation cylinder, the dovetail slider includes two inclined limiting surfaces and a bottom surface. The bottom surface is in contact with the bottom of the dovetail groove, and the limiting surface abuts against the two groove walls of the dovetail groove to restrict the movement of the split splicing plate in the short side direction.
[0010] In the dovetail groove spliced insulation cylinder, the dovetail groove includes several dovetail-shaped hollows at different angles, and at least a portion of the three side walls of each dovetail-shaped hollow are in contact with the dovetail slider.
[0011] In the dovetail groove spliced insulation cylinder, the long side of the split splicing plate is provided with a rounded corner to avoid interference.
[0012] In the dovetail groove spliced insulation cylinder, the locking groove is provided with an arc-shaped slide that slides in conjunction with the lock head at the end of the locking post. One end of the arc-shaped slide is the slide connection position for the axial movement of the lock head, and the other end of the arc-shaped slide is the slide locking position that restricts the axial movement of the lock head.
[0013] In the dovetail groove spliced insulation cylinder, the groove portion of the slide lock position is covered by a limiting baffle that only allows the lock head support shaft to extend out of the groove, and the limiting baffle abuts against the lock head axially.
[0014] In the dovetail groove spliced insulation cylinder, a connecting ring is provided between the insulation cylinder bodies. The connecting ring is connected to the insulation cylinder body through a number of locking posts and locking grooves provided on the end face.
[0015] In the dovetail groove spliced insulation cylinder, the axial surface of the connecting ring is provided with a flat alignment end face, and the alignment end face abuts against the short side end face on the same side of each split splicing plate in the insulation cylinder body.
[0016] The advantages of this utility model are: Adjacent modular panels are connected by dovetail sliders and dovetail grooves. After the three sides of the dovetail slider abut against the side wall of the dovetail groove, the connection angle between the adjacent modular panels can be fixed, thereby fixing the diameter of the entire insulation cylinder. At the same time, the dovetail groove has multiple slots with different angles for the slider to insert, allowing for different angles between adjacent modular panels, thus transforming them into insulation cylinders of different diameters. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This is a schematic diagram of the locking column side structure of the split splicing plate of this utility model.
[0019] Figure 3 This is a schematic diagram of the locking groove side structure of the split splicing plate of this utility model.
[0020] Figure 4 This is a schematic diagram of the connecting ring structure of this utility model.
[0021] In the diagram, the components are: 1. Split splicing plate; 11. Rounded corner; 2. Locking post; 21. Lock head; 22. Lock head support shaft; 3. Locking groove; 3. Arc-shaped slide; 31. Limiting baffle; 32. Dovetail slider; 4. Limiting surface; 41. Bottom surface; 42. Dovetail groove; 5. Connecting ring; 6. Alignment end face; 61. Detailed Implementation
[0022] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.
[0023] like Figures 1-4 As shown, the dovetail splicing insulation cylinder includes a split splicing plate 1. The split splicing plate 1 has dovetail connection structures that can cooperate with each other at both ends of its long side. Several adjacent split splicing plates 1 are joined together at different angles by the dovetail connection structures to form a complete insulation cylinder body. Locking posts 2 and locking grooves 3 are provided at both ends of the short side of the split splicing plate 1 to make the insulation cylinder bodies axially connected.
[0024] That is, adjacent split panels are connected by dovetail sliders and dovetail grooves. After the three sides of the dovetail sliders abut against the sidewalls of the dovetail grooves, the connection angle between the adjacent split panels can be fixed, thereby fixing the diameter of the entire insulation cylinder. At the same time, the dovetail grooves have multiple slots with different angles for the sliders to insert, allowing for different angles between adjacent split panels, thus transforming them into insulation cylinders of different diameters.
[0025] In this embodiment, the dovetail connection structure includes a dovetail slider 4 at one end and a dovetail groove 5 at the other end. The dovetail slider 4 is inserted into the dovetail groove 5 on the adjacent split splicing plate 1 from the long side direction.
[0026] Alternatively, the dovetail connection structure includes dovetail sliders 4 disposed at both ends of a split splicing plate 1 and dovetail grooves 5 disposed at both ends of an adjacent split splicing plate 1, with the dovetail sliders 4 inserted into the dovetail grooves 5 on the adjacent split splicing plate 1 from the long side direction.
[0027] Split-type splicing plates can be dovetail sliders on one side and dovetail grooves on the other, or both sides can be dovetail sliders or dovetail grooves. Usually, the specification of one side dovetail slider and the other side dovetail groove is selected to make the components more adaptable.
[0028] The single-sided slider and single-sided slot are fixed by sliding in, which is simple to assemble and locks in place by sliding in, and also enhances the shear resistance of the splice.
[0029] In this embodiment, the dovetail slider 4 includes a limiting surface 41 with inclined sides and a bottom surface 42. The bottom surface 42 is in contact with the bottom of the dovetail groove 5, and the limiting surface 41 abuts against the two groove walls of the dovetail groove 5 to restrict the movement of the split splicing plate 1 in the short side direction.
[0030] The slider is machined into a trapezoidal shape and embedded in the groove. The inclined limiting surface acts as a wedge to prevent the splicing plate from shaking in the radial or axial direction, ensuring high concentricity of the insulation cylinder after splicing.
[0031] In this embodiment, the dovetail groove 5 includes several dovetail-shaped cutouts at different angles, and at least a portion of the three sidewalls of each dovetail-shaped cutout are in contact with the dovetail slider 4.
[0032] Multiple dovetail-shaped cutouts share a common space with some overlap, but the angle between the two limiting surfaces and the bottom surface of each dovetail-shaped cutout matches the dovetail slider, thus forming a wedge-tightening effect to fix the adjacent split splicing plates.
[0033] In this embodiment, the long side of the split splicing panel 1 is provided with a rounded corner 11 to avoid obstacles.
[0034] Chamfering or rounding the long edges of the splicing panels helps avoid interference during assembly and provides ample space for angle changes between adjacent splicing panels, improving assembly smoothness and reducing stress concentration.
[0035] In this embodiment, the locking groove 3 is provided with an arc-shaped slide 31 that slides in cooperation with the lock head 21 at the end of the locking pin 2. One end of the arc-shaped slide 31 is the slide connection position for the axial movement of the lock head 21, and the other end of the arc-shaped slide 31 is the slide locking position that restricts the axial movement of the lock head 21.
[0036] When it is necessary to increase the length of the insulation cylinder, multiple assembled insulation cylinders can be axially connected. After the locking head of the locking pin is inserted into the slide groove, it moves along the arc-shaped slide to the locking position to prevent the locking head from falling off by itself, thus achieving quick loading and unloading and improving the reliability of the extended insulation cylinder.
[0037] In this embodiment, the slot of the slide lock position is covered by a limiting baffle 32, which only allows the lock head support shaft 22 to extend out of the slot, and the limiting baffle 32 abuts against the lock head 21 axially.
[0038] The limiting baffle covers the slot except for the slide rail connection position, leaving only an arc-shaped gap for the lock head support shaft to slide with the lock head. The lock head is restricted within the limiting baffle and the inner wall of the arc-shaped slide rail to prevent the two insulation cylinders from loosening axially.
[0039] Among them, at least three corresponding locking structures are set on the end face of the assembled insulation cylinder to ensure the coaxiality between the cylinders.
[0040] In this embodiment, a connecting ring 6 is provided between the insulation cylinder bodies. The connecting ring 6 is connected to the insulation cylinder body through a plurality of locking pins 2 and locking grooves 3 provided on the end face.
[0041] The connecting ring, as an intermediate component, has multiple locking interfaces to connect the upper and lower insulation cylinders, enabling modular splicing of multiple insulation cylinders and facilitating the extension of cylinder length to enhance expandability.
[0042] In this embodiment, the axial surface of the connecting ring 6 is provided with a flat alignment end face 61, which abuts against the short side end face on the same side of each split splice plate 1 in the heat insulation cylinder body.
[0043] Because there is no axial positioning constraint between the individual splicing plates in the insulation cylinder, the upper and lower end faces inevitably become misaligned, which can easily lead to stress concentration after splicing. Therefore, connecting rings are installed at both ends of the insulation cylinder to make the upper and lower end faces of each individual splicing plate aligned and regular, thus ensuring the structural strength of the insulation cylinder after splicing.
[0044] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A heat preservation cylinder spliced by dovetail grooves, comprising split splicing plates (1), characterized in that, The split splicing plate (1) has dovetail connection structures that can cooperate with each other at both ends of the long side. Several adjacent split splicing plates (1) are joined together at different angles of the dovetail connection structures to form a complete heat preservation cylinder body. Locking posts (2) and locking grooves (3) are provided at both ends of the short side of the split splicing plate (1) to make the heat preservation cylinder bodies axially connected.
2. The dovetail spliced insulation cylinder according to claim 1, wherein, The dovetail connection structure includes a dovetail slider (4) at one end and a dovetail groove (5) at the other end. The dovetail slider (4) is inserted into the dovetail groove (5) on the adjacent split splicing plate (1) from the long side direction.
3. The dovetail spliced insulation post according to claim 1, wherein, The dovetail connection structure includes dovetail sliders (4) disposed at both ends of one of the split splicing plates (1) and dovetail grooves (5) at both ends of the adjacent split splicing plates (1). The dovetail sliders (4) are inserted into the dovetail grooves (5) on the adjacent split splicing plates (1) from the long side direction.
4. The dovetail spliced insulation cylinder according to claim 2 or 3, wherein, The dovetail slider (4) includes two inclined limiting surfaces (41) and a bottom surface (42). The bottom surface (42) is in contact with the bottom of the dovetail groove (5). The limiting surface (41) abuts against the two groove walls of the dovetail groove (5) to restrict the movement of the split splicing plate (1) in the short side direction.
5. The dovetail spliced insulation cylinder according to claim 2 or 3, wherein, The dovetail groove (5) includes several dovetail-shaped cutouts at different angles, and at least a portion of the three sidewalls of each dovetail-shaped cutout are in contact with the dovetail slider (4).
6. The dovetail spliced insulating column according to claim 1, wherein, The long side of the split splicing panel (1) is provided with a rounded corner (11) to avoid obstacles.
7. The dovetail spliced insulating column according to claim 1, wherein, The locking groove (3) is provided with an arc-shaped slide (31) that slides in cooperation with the lock head (21) at the end of the locking post (2). One end of the arc-shaped slide (31) is the slide connection position for the axial movement of the lock head (21), and the other end of the arc-shaped slide (31) is the slide locking position that restricts the axial movement of the lock head (21).
8. The dovetail spliced insulating column according to claim 7, wherein, The groove portion of the slide lock position is covered by a limiting baffle (32) that allows only the lock head support shaft (22) to extend out of the groove, and the limiting baffle (32) abuts against the lock head (21) axially.
9. The dovetail spliced insulating column according to claim 1, wherein, A connecting ring (6) is provided between the insulation cylinder bodies. The connecting ring (6) is connected to the insulation cylinder body through a plurality of locking pins (2) and locking grooves (3) provided on the end face.
10. The dovetail spliced insulating column according to claim 9, wherein, The axial surface of the connecting ring (6) is provided with a flat alignment end face (61), which abuts against the short side end face on the same side of each split splice plate (1) in the heat insulation cylinder body.